Door and door-operating mechanism for furnaces and the like



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2 Sheets-Sheet 1 v, WINDETT mea March G 1926) III DOOR AND DOQR OPERATING KEGHANLSM FOR FURNACES AND THE LIKE Nov. 27, 1923.

Nov. 27 1923. 1,475,731

' V. WINDETT DOOR AND DOOR OPERATING MECHANISM FOR FURNACES AND THE LIKE Filed March 6 1,920 2 sheets-sheet 2 f ne Ill "5). s. a. ll 1'.

3300?, AND DOOE-GPERATING .TdECHiTi'ZE-TI rplicecion filed March To all whom it may concern:

Be it lmown that l, Vicron Vfinnnrr, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful improvement in Doors Door- Llperating Mechanism for Furnaces and the like, of which the following is a full, clear, and exact description.

This invention relates to a door and door operating mechanism for furnaces and the like, and has for its chief object to provide a structure by which the do r may be firmly seated against the frame and readily moved laterally from the door opening.

The invention may be briefly summarized as consisting in certain novel details of construction, and combinations and arrange ments oi parts which will be described in the specification and set forth in the appended claims.

In the accompanying sheets of drawings, Fig. l is a side view of a portion of the furnace, or off a similar structure to be closed, equipped with my improved door and door operating mechanism; 2 is a sectional view substantially along the line 2-2 of 1, looking in the direction indicated by the arrows, or toward the rear of the door and door operating mechanism; 3 is an enlarged vertical sectional view substantially along the line 3-3 of Fig. 2, looking in the direction indicated by the arrows; Fig. -11 is an enlarged front elevation; and Fig. 5 is a sectional view substantially along the line 5-5 of Fig. 5, looking in the direction in dicated by the arrows.

In the drawings, 10 represents a portion of a furnace, the vestibule or a furnace, or similar structure to be closed by the door. At the front of the structure 10, or at some point between its ends, if the structure is continued on both sides of the door as shown in Fig. is door frame or casing ll adapted to'accommodate the door 12, which is preferably circular in outline. The door casing 11 has front and rear walls 11* and 11 spaced apart distance greater than the thickness of the door. The space thus provided for the marginal portion of the door is closed at the bot tom and sides, and at the top opens into an upper door receiving chamber 13 which may be of any suitable construction. but here shown, is formed largely of brickwork. The door receiving chamber is shown at the top,

FURNAUES AND THE LIKE.

- the reason that in this instance the door s moved upwardly to open it, though the erm lateral is used in a broad sense to include a movement in substantially the plane the door some other direction such as sidewise, for I do not regard it essential to aspect that the my invention in its broadest door be elevated to open it.

0n the wall li of the door frame, a series of concentric ridges 11 are provided, two such ridges being here shown, which ridges accommodate and extend into correspondingly shaped concentric grooves 12 of the door 12 when the latter is fully seated, these interfitting ridges and grooves of the door frame and door preventing flow of gases in or out of the furnace when the door is closed.

The door is moved laterally or vertically in this instance to shift it to and from closed position by means of a pair of cables or chains 14a, which at their lower ends are at" lied to the top of the door and extend upwardly through the chamber 13 around slieaics 15 positioned at the top of the chamber "3, andthen to a winch or other suitable winding and unwinding mechanism (not shown). It will be noted by reference to Fig. i, that the sheaves 15 are ordset forwardly somewhat from the plane of the door when ti e latter is seated, and by reference to this iigure and to Figs. 3 and 5 it will be observed that there is suflicient clearance between the outer face of the door and the Wall 11* of the door frame or casing that when the to, it will, by of the sheaves to swing by gravity away from its seatuntil oreyiously interfitting ridges and grooves entirely clear of each other. lilG door is seated by aplurality of axially nioval'ile plungers 16, which extend through, and have a bearing in the outer wall 11 of the door casing, the door being provided on its outer surface with a metal ring l2 which the inner ends of the plunger 16 engage. 'lhese plungers, which may be operated in different ways, in this instance engage nuts and are moved in and out by a system of shafts and bevel gearing supported by a framework designated as a whole by the r erence character 18, and elected as shown, at the front side of the door.

'lhough the shafting and gears could be motor operated if desired, in this instance they are operated by a hand wheel 19, connected by bevel gears to a vertical shaft 21 which is connected by bevel gears 22 to horizontal shafts 23 which operate part of the plungers, and also to a second vertical shaft 2% which is on the opposite side of thedoor from the vertical shaft 21 and is connected by similar sets of bevel gears 22 to horizontal shafts 23 which operate the re mainder of the plungers. The inner ends of the shafts 23 have bevel gears which engage and rotate bevel gears 26 which are connected. to and turn with the nuts 17 which engage threaded portions of the plungers 16. The nuts 17 and bevel gears 26 are ionrnaled in suitable portions of the framewo k as indicated in Fig. 5, and are, of course, held from longitudinal movement relative to the plnngers.

It will be obvious that when the hand wheel 19 is turned, all the pliingers 16, which as here shown are eight in number and are uniiormly spaced around the door,

till

will be actuated simultaneously, and that when the hand wheel is turned in one direction, these plungers will engage the ring 12 on the outer face of the door and press the door firmly against its seat, Likewise when the hand wheel is turned in the reverse direction, the plungers will be simultancously backed away from the door which will then automac cally swing outwardly from its sea y reason of the offset position of the u sheaves l", and may then be elevated by winding; in the cables M which are attached to and support the door,

The door 12 may be constructed in any suitable manner. b-nt preferably it will be composed of an outer frame carry ng a heavy screen, and w th both inner and outer faces covered with a heat resisting cement and is prefwhich is baked on the door. eraby fire, acid and waterproof. The circuiar grooves on the inner face of the door are preferably ground in place,

r moor cons iuc e as a O\o cescri ed, all answer all requirements with respect to durmality, and at the same time is nonwarpmg.

Havi g described my invention, I claim:

1. ihe combination with a door frame or a furnace or the like, of a door adapted to shifted laterally with respect to the door frame, and a plurality of circumferentially apaced axially movable members engageable with the door for pressing the door against the frame, or for releasing the same.

2, llhe combination with a door frame furnace or the like, of door adapt id to engage the tram with means connected to door for elevating it and lowering it with respect to the frame, and plurality of eircumferent illy spaced axially movable members engageable with the door for presspres the door against the seat.

i. he combination wlti a door frame-0t a furnace or the like, said frame having a door seat, of a vertically movable door, in- ;erengaging ridges and grooves on said door and door seat, means for suspending the door so that it may swing toward and from the seat said means serving to raise and lower the door, and axially movable members se )arate from said means for pressing the door against the seat and for releasing it.

The combination with a door frame of a furnace or the like, said frame having a door seat, of a vertically movable door, means for suspending the door so that it may swing toward and from the seat, said means serving to raise and lower the door, a plurality of phingers for engaging spaced points of the door, and means for simultaneously actuating the plungers.

6. The combination with a door frame of a furnace or the like, said frame having a seat, of a door, the door and seat having intcrfitting ridges and grooves-, means for pressing the door inst the seat and for releasing the same, and means separate from the first named means for shifting the door laterally with respect to the seat.

7 T a door frame of combination with I .ace or the like, the having a seat, of door movable toward and from the seatwhen in line therewith, and also movable l terally with respect to the seat, axially movable devices for pressing the door a inst the seat and for releasing the door, dllCl means separate from the said devices for supporting the door so that when released by said devices it will move clear of the seat whereby it may then be moved laterally with respect thereto.

8. The combination with a door frame of a fnrnace or the like, the frame having a seat, of flexible means for supporting the door so that it may be swung toward and from the seat and may be shifted laterally with respect thereto, and a plurality of axially movable plungers engaging the door for pressing the door against the seat or for releasing the same.

9. The combination with a. door casing of a furnace or the like. said casing having a seat, a door adapted to engage the door whereby the door may swing away the seat.

from the seat and may be elevated, ande the door and extending therefrom out of plurality of axially movable plungers supthe plane of the door whereby the door may ported in front of the door, and means for be swung away from the seat and may be moving them simultaneously so as to press elevated, and separate means for pressing 5 the door inwardly against the seat, or to rethe door against the seat when the door is in lease the door so that it may swing clear line with the seat. of the seat. In testimony whereof, I hereunto afiix my 10. The combination with a door casing signature.

having a seat, a door adapted to engage the 10 seat, flexible suspending means connected to VICTOR WINDETT. 

